... used as the power producer of prestressing jack, extruder, cotton gin, etc. ZB(Y) series high ... used as the power producer of prestressing jack, extruder, cotton gin, etc.ModelRated pressure(50Mpa)Retad flow ... *820For use with all kinds of prestressing jack, extruder, cotton gin, etc., the rated pressure of ... For use with all kinds of prestressing jack, extruder, cotton gin, etc., the rated pressure of ...